Arrangement on sewing machines for stacking the sewn work blanks

ABSTRACT

Arrangement on sewing machines having a carrier arm and including a carrier bar for receiving work blanks astride after they leave the stitch-forming location on the carrier arm of the machine in downward direction, said bar extending parallel to and being connected to the machine arm.

United States Patent [72] Inventor Gerhard Miirdter Balingen, Germany[2]] Appl. No. 863,179 [22] Filed Oct. 2, 1969 [45] Patented Oct. 5,1971 [73] Assignee Firma G.M. Piaff GA Kaiserslautern/Pfalz, Germany[32] Priority Dec. 19, 1968 [33] Germany [31] G6812124.4

[54] ARRANGEMENT ON SEWING MACHINES FOR STACKING THE SEWN WORK BLANKS 2Claims, 1 Drawing Fig.

52 us. on ..'.112/121.29, 214/6, 100/1 [511 1nt.Cl D05b 33/00 501 Fieldof Search ..1l2/l2l. 29; 214/5.5,6; 271/61, 81; Bil/83,84, 86, as;100/1, 2, 7

[56] References Cited UNITED STATES PATENTS 2,327,252 8/1943 Dickerson214/55 2,492,925 12/1949 Segur 1 12/12 l 29 3,l59,l22 12/1964 Hedegaardll2/l2l.29

Primary Examiner-James R. Boler AttorneyRobert H. Jacobs ABSTRACT:Arrangement on sewing machines having a carrier arm and including acarrier bar for receiving work blanks astride after they leave thestitch-forming location on the carrier arm of the machine in downwarddirection, said bar extending parallel to and being connected to themachine arm.

ARRANGEMENT ON SEWING MACHINES FOR STACKING THE SEWN WORK BLANKSBACKGROUND OF THE INVENTION Devices are known for stacking the workblanks that are 1 discharged by a sewing machine which have a carryingelement extending transversely of the feeding direction of the materialbeing sewn, that receives the work blanks astride or in a straddlingmanner. The carrying element arranged at a distance from the sewingmachine must in this connection be moved in relation to the operation ofthe preceding sewing machine by means of its own drive means upon theobliquely extending path from its low position in which the forward endof the work blank slides over it into an upper end position andsubsequently again back to its low position. Only in this manner it ispossible to keep the path short which is to be covered by the freelyfalling work blanks and thus to insure a safe reception of the workblanks. An arrangement of this type thus makes possible a relativelysafe receiving of the work blanks to be stacked, however, due to thedrive means necessary for the rod-shaped carrying member, it isexpensive to construct and also very unwieldy. In addition, the stackedsewn material cannot be readily removed. Especially the bundling of astack of sewn material is cumbersome because for this it is necessary toremove the stack of work blanks from the carrying element, lay it upon abundling ribbon whereupon it is only possible to bundle the stack.

SUMMARY OF THE lNVENTlON It is an object of the invention to provide anarrangement for stacking sewn work blanks which, while obviating partsto be moved, insures safe reception of the work blanks to be stacked andsimultaneously makes possible the bundling of the work blank stackwithout any further manipulation.

in accordance with the invention this is accomplished by means of acarrier bar that receives the work blanks astride, in that the carrierbar is secured to the material-carrying arm of the sewing machine in adirection parallel to the feed of the sewing machine and that at thebottom side of the carrier bar a bundling band releasably connected withit is provided in the area between the two ends.

The work blanks leaving the stitch-forming location of the sewingmachine slide preferably downwardly astride upon the carrier barparallel to the direction of the material feed. When the stack of workblanks has reached the desired height or a sufficient number of workblanks then the bundling band arranged at the bottom side of the carrierbar and essentially parallel thereto is released from the carrier bar,is folded with both its ends over the stack of work blanks and thelatter is subsequently bundled.

A particularly advantageous arrangement of the carrier bar, especiallywhen lock stitch seams are produced, is obtained in that the bar isreleasably secured to the material-carrying arm of the sewing machine.

During the production of a lockstitch seam the work blanks, for exampleunderwear, are placed annularly in a known manner around thematerial-carrying arm of the machine. Thus, as they leave thestitch-forming location, they are threaded upon the carrier bar and theband secured to its bottom side. When the stack of work blanks hasreached the desired number, then the stack is bundled in the requiredmanner, subsequently the carrier bar is released for removing the stackfrom the material-carrying arm of the machine, the bundled stack isremoved and then it is again connected with the machine for receivingthe next stack.

DESCRlPTlON OF THE INVENTION In the following the invention is explainedmore in detail with reference to an embodiment illustrated in theaccomparaing drawing.

e arm-downward-operating sewing machine 1 illustrated in the drawing ismounted in a known manner upon a frame 2 and comprises a head 3, astandard 4 and a material-carrying arm 5.

The needle bar 6 and the material presser bar 8 that receives thepresser foot 7 are arranged in the head 3 of the sewing machine, whilethe feed dog 9 is provided in the material carrying arm 5. The feed dogguides the material 0 being sewn in a known manner down the armunderneath the stitch forming area of the sewing machine.

At the end of the material-carrying arm 5 a carrier bar 10 is arrangedwhich receives the work blanks that leave the stitchforming area of thesewing machine. The carrier bar 10 is bent at both of its ends in themanner shown in the drawing. The carrier bar 10 which is essentiallyparallel to the direction of feed of the sewing machine is received atits lower end that is bent vertically downwardly in a bore that isprovided in an intermediate floor 11 of the frame 2. Its upper end thatis essentially horizontally directed is supported in a U-shaped recess(not illustrated) provided at the end of the material carrier arm 5.

At the bottom side of the carrier bar 10 a bundling band 13 ofrectangular cross section is provided that is directed essentiallyparallel to the carrying bar. One end of the bundling band is formed toconstitute a loop 14. This end of the bum dling band 13 is hooked onto ahook 15, secured to the bottom side of the carrier bar 10, while thelower end of the bundling band is held by means of a clamping spring 16also provided at the underside of the carrier bar.

The work blanks delivered by the sewing machine which already hang downon both sides from the material carrier arm 5 of the machine while theseam is being formed slide onto the carrier bar 10 as they leave thestitch-forming area and are received thereon astride. In the embodimentillustrated the work blanks slide downwardly on the carrier bar 10 andcome to rest on the intermediate floor 11 of the frame 2. At that timethey still hang across the carrier bar 10. When the stack of work blankshas reached a certain height or when a certain number of work blankshave been stacked, the bundling band is first released at its lower endand then at the upper end of the carrier bar 10. Subsequently the stackof work blanks is bundled in a known manner and removed from the carrierbar 10.

in the embodiment illustrated the bundling band 13 is releasably securedat both ends at the bottom side of the carrier bar.

It is possible without departing from the inventive concept to fastenthe bundling band at one end to the intermediate floor 11 of the frameand the other end to the material carrier arm of the machine. Theembodiment illustrated in the drawing will, as a rule however bepreferred because in the other possible embodiment the bundling band 13and the carrier bar 10 must be secured separately from one another tothe material carrier arm of the sewing machine and to the intermediatefloor.

Having now described my invention, what I desire to protect by letterspatent is set forth in the appended claims.

I claim:

1. Arrangement on sewing machines for stacking the sewn work blanks,particularly for arm-downward-operating machines having a materialcarrier arm with a stitch-forming area, said arrangement comprising acarrier bar for receiving work blanks astride upon leaving thestitch-fanning area, means securing said carrier bar to said carrier armsaid carrier bar extending essentially parallel to the direction of feedof the sewing machine, a bundling band, means at each end of saidcarrier bar releasably retaining said bundling band proximate the bottomside of said carrier bar intennediate the two ends thereof.

2. Arrangement in accordance with claim 1, wherein said securing meansreleasably supports said carrier bar on the material carrier arm of thesewing machine.

1. Arrangement on sewing machines for stacking the sewn work blanks,particularly for arm-downward-operatIng machines having a materialcarrier arm with a stitch-forming area, said arrangement comprising acarrier bar for receiving work blanks astride upon leaving thestitch-forming area, means securing said carrier bar to said carrier armsaid carrier bar extending essentially parallel to the direction of feedof the sewing machine, a bundling band, means at each end of saidcarrier bar releasably retaining said bundling band proximate the bottomside of said carrier bar intermediate the two ends thereof. 2.Arrangement in accordance with claim 1, wherein said securing meansreleasably supports said carrier bar on the material carrier arm of thesewing machine.